A major area of a challenging disorder, neuropsychology, includes addiction as a direct impact both on brain activity and behavior. Most cases of addiction are characterized by compulsive substance use or harmful behaviors. The neurocognitive processes inherent in addiction give investigators and clinicians a more nuanced understanding of how addiction may be developed and how such problem can be treated most effectively.
It's at the heart of addiction: the reward system in the brain that is heavily regulated by dopamine, a neurotransmitter. During substance use like drug or engaging in an addictive behavior such as gambling, the brain fills with the dopamine, creates a positive association to the behavior, and gives massive associations to a substance or activity about pleasure. The brain becomes tolerant over time to such high levels of dopamine which will demand higher quantities of the substance or behavior to achieve those levels.
Neuro-psychological studies have shown that dependency through drugs attacks mainly many cognitive skills, for example, decision making, impulsive control, and memory. The frontal cortex, which handles the executive functions of judgment and self-control, loses its functionality. Meanwhile, the amygdala, in charge of the whole emotional response, becomes highly active. This way, there develops a cycle of urge and impulsive action which is hard to break.
Addiction also leads to long-term structural and functional alterations of the brain. Neuroplasticity seems to be impaired in addicts as it refers to the brain's ability to change and reorganize itself; this renders them unable to recover as a result of alteration in wiring patterns in the brain favoring addictive behavior over the healthy ones.
Treatment of addiction may involve a variety of interventions, including neuropsychological therapies, behavioral treatments, and medical treatments. Cognitive-behavioral therapy is an example of this, in which the individual recognizes and changes inappropriate thinking and behavior responsible for their addiction. In more extreme cases, medications such as methadone or naltrexone can be used to decrease craving and withdrawal symptoms, especially if someone has opioid or alcohol addiction.
Recovery from addiction is a long process where treatment has to target both aspects of the disorder-neurological and psychological aspects. Neuropsychological evaluations can help in laying out the proper treatment procedure for each patient, hence upgrading the potential of a successful recovery by addressing the cognitive and emotional impairments of an addiction victim.
In conclusion, the field of neuropsychology would elucidate the mechanisms of addiction and thus offer effective strategies for treatment in the ongoing fight against substance use disorders.